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Fossil fuels use in Czech Republic
Trávníček, Tomáš ; Kracík, Petr (referee) ; Baláš, Marek (advisor)
The aim of the bachelor thesis is to collect facts about fossil fuels and their utilization in the Czech Republic. Firstly, the thesis discusses the fossil fuels and their division in general. The main part of the thesis is focused on mining and utilization of different kinds of fossil fuels in the Czech Republic with the emphasis being put on the brown coal, black coal and the natural gas. The oil and the lignite are briefly dealt with as well. The thesis includes the statistics of the fossil fuels‘ production of the mining companies, the summary of the big energy facilities in the Czech Republic and the mapping of their fuel bases.
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Biogas processing
Vařeka, Miloš ; Hanák, Libor (referee) ; Dvořák, Radek (advisor)
The aim of this work is to introduce technology sufficient of usage for treatment of biogas to the quality of natural gas and to propose and to realize an experiment in finding effectivity of one of these methods.
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Sector coupling and the future form of the electricity and gas sectors
Švéda, Miroslav ; MA, Martin Šik, (referee) ; Radil, Lukáš (advisor)
This thesis deals with Sector coupling problematics. First, it deals with the development and present situation in the generation and consumption of electric power and the development and present situation in the extraction and consumption of natural gas in the Czech Republic and in the European union. Further, the thesis deals with Sector coupling, this concept is explained, and it is adumbrated what questions it deals with. Then, the technologies that can be achieved in the future of Sector coupling are introduced. Pilot projects of these technologies are presented as part of the discussion about these technologies. Finally, a consideration of the future use of Sector coupling technologies in the Czech Republic is given.
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Heigh effective condensation boiler feeded by natural gas
Renfus, Jaromír ; Fortelný, Zdeněk (referee) ; Fiedler, Jan (referee) ; Pospíšil, Jiří (advisor)
The dissertation is concerned with a problem of condensing boilers. The attention will apply to the condensing boiler which is filled in an absortion springle for a better an-nealing of exhaust gas. On this account the dissertation is possible to divide by some parts. There is a generally resolution of a condensing boiler´s principle and an effective annealing of exhaust gas for low temperatures in the first part. A description of an ab-sorption circulation follows in the second part. A practical part solves a suggestion of the condensing boiler with an absorption afterheat removal springle, an assesment of working parameters and a calculation of heat transfer surfaces. A technoeconomic ana-lysis of a proposed arrangement is made in the final part.
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Underground Gas Storages
Flodr, Jan ; Škorpík, Jiří (referee) ; Lisý, Martin (advisor)
Natural gas is one of the main energy resources in the world. In case of countries without their own resources, it is very important how and where from they import this raw material and whether they utilize it effectively. The aim of this thesis is to describe the supply of the Czech Republic concerning natural gas and underground gas storage.
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Fuel for internal combustion engines
Vrbický, Jiří ; Jedelský, Jan (referee) ; Štětina, Josef (advisor)
This thesis is concerned with basic features of fuels for internal consumption engines, especially their influence on thermal efficiency. It also introduces dividing of fuels and their compare in ecologic, economic and technologic side. It is concerned convectional fuels (gasoline, diesel oil) and alternative fuels (nature gas, bottled gas, hydrogen, biodiesel, biogas, methanol and ethanol).
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Expansion Turbine
Hlavinka, Miloslav ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
The content of this bachelor thesis is the analysys of a problem of expansion turbines and their usage in the gas-steam cycle. In the first part the respective parts of the combided cycle are described, Brayton cycle and Rankine-Clausius cycle. The gas-steam cycle is discribed subsequently. In the second part the natural gas is briefly described and how it gets to us. There is described the conventional natural gas reduction station and the conventional process steam reduction station. The main part is a description of the expansion turbine, division of turbines, caluclation of efficiency and a description of steam and natural gas expansion turbine. Then there is a describtion of the steam-gas heating plant Červený mlýn and its parts. As an example of the economic evaluation the replacement of conventional reduction station at heating plant Červený mlýn by expansion turbine is shown.
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Gas Supply and Underground Gas Storages in Slovakia
Galbavý, Mário ; Poláčik, Ján (referee) ; Lisý, Martin (advisor)
The aim of this bachelor thesis is to describe the situation regarding the storage and supply of natural gas in Slovakia. Thesis is divided into 4 chapters. The first chapter deals with natural gas from a general point of view, from its properties to its possible use. The second part describes the situation of supplying Slovakia with natural gas. The third part deals with the ways of storing natural gas and individual underground reservoirs located in Slovakia. The final part describes the reasons for the storage of natural gas and the possibility of measures that can ensure the security of its supply.
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Cost-efficient design of high pressure gas pipeline
Šrámková, Veronika ; Pernica, Marek (referee) ; Létal, Tomáš (advisor)
The aim of this thesis was the cost-efficient design of high pressure gas pipeline with a maximum capacity 40 mil.Nm3/day and a length of the pipeline 100 km. The economic design consisted of analyzing and comparing expenses for three different pipelines over a 20-year period. The thesis includes the design of pipe dimensions with proposed thickness of pipe walls according to STN EN 1594: 2014 and ISO 4200: 2010. Software Simone was used in order to determine the pressure loss and the number of compressor stations. Software calculated the necessary power of compressor stations and fuel gas consumption as well. Based on the necessary power, the most economically advantageous gas turbine compressors were chosen for each compressor station. The capital expenditures consisted of the price for compressor stations together with gas pipelines. The operating expenditures for 20 years were added to these costs. In conclusion of the thesis, a comparison of expenditures for all 3 variants was conducted. Based on the results, it can be stated that the most economically advantageous variant of the construction is a gas pipeline with a diameter DN1000.
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